Piston-rod packing



Feb 5 g, w24, www@ W. SUDEKUM PIsToN Ron PACKING H Filed March 1n, 1221 Shtssheet 2 3 a H10 n 221? n V www0 I5 tenant tentent certes.

PISTON-ROD lPACKNG.

Application led March l1, 1921. Serial No. 451,618.

To all whom t may concern:

Be it known that l, WILLIAM SUDEKUM, a citizen of the, United States, residing at Nashville, in the' county of Davidson and State of Tennessee, have invented certain new and useful Improvements in Piston-Rod Packings, of which the following is va specification.

My invention consists in a new and useful improvement in iston rod packing and is'designed to provi e a device for packing stuiing boxes for pistons, which will obviate the scoring of piston rods due to their vibration in yuse. This desirable result is obthe piston rod from the possibility of scoring` is the ease and simplicity in replacing such of the elements of the device as-are subjected to Wear in use. ln my device, the wearing parts may be quickly and economically replaced Without thenecessity of tearing down the machine to which the device is applied, thus materially diminishing the period of time required for replacement,

and consequently reducing the costl thereof.

The invention is embodied in the details of construction illustrated in the drawings and hereinafter fully described, but il yo not consider my invention limited to the specic embodiment herein set forth and refer for its scope to the claims appended hereto. A

ln the'draWings-z Fig. l is a vertical sectional view ot a stumng box provided with one torni of my device. ,c

Fig. 2 is a transverse section on the line 2 2 of 1F ig. l, viewed in the direction indicated by the arrow. u

Fig. 3 is a vertical section of a modied form ot gland.

Fig. d is a vertical section ot a moduded form of gland adapted to be positioned in the stutling box by means of a screw-cap.

Fig. 5 is a vertical section ot a moditied form of gland designed tor use upon a stug box in which heavy grease may be used as a lubricant.

nl rig. i, c nain un einen nA which my device .is applied, and -B is the kof the portions G1 and stuiing box containingvthe packing. .The cylinder C is provided `tvith an openin C1 for the passage' of the piston rod P, W ich opening C1 is suliiciently large to allow. the 60 piston rod P free movement without ossibility of touching the wall of the cylin er C. Into the outer end of the stutling box B there is inserted my novel gland composed ot the complementary semi-circular portions G1 65 and G2. rl`hese portions are provided vvith. semi-circular recesses G3 and G4 respectively tormed in the inner faces of the portions GL and G2 toward their ends entending into the stuiiing bon B. The portion Gl 70 which is laced above the portion G2 is rovided with an oil conduit G exten in from the outer endof the portion G1 an communicating with lthe recess G3. The necesses G3 and G4 are adapted to co-act toto form a circular chamber in the gland, nirroundinr the piston rod l) and which receives t erein the vibrating ring V which closely surrounds the piston rodlP. .This rin V is provided upon its exterior and in- S0 terior laces with circumferential cbaels V1 and V2 respectively. Radial bores VB connect these channels V1 and V2. This structure ot the ring V provides means tor the distribution of oil or other lubricatinp1 @5 agent su pliedthrough the conduit G an recesses 3 and Gt, to the piston rod l.

A retaining ring lt provided Withinternal threads is adapted to be received upon external threads u on the outer ends co 2 to form said pon tions into a unitar gland after the 'V has been inserted into the chamber termed by the recesses Gm and G4. A loclrinrg screw S is provided for locking said ring 1 upon on the portions G3 and G when the parte are properly positioned. This ring R is'pro-l vided vvith an internally threaded scclret R1 adapted to receive therein any suitable torni of oil cup or other lubricant container, and ico which is connected by the conduit l?? with the conduit G5. The retaining ring l?, is provided with openings lt adapted to receive therethrough 4.the bolts ll* upon the stun7 bon B. By the application ot nuts rco (not sbovvn) to the bolts B1, the ring lt and its accompsnyin gland may be bolted to the stutlinn: box in the usual manner. f

The portions G and G2 or my gland have interior semi-circular concave faces G and no G7 which are spaced "from the pismn rod l? when the gland is bolted in position. Thus it will 'be seen that `it-.is not possible for ring V10 which closely 4 V12 and V12.

' pressed.

any part of my gland to contact the piston rod The inner ends of the portions G1 and G2 `are provided with the diver ently beveled faces G8 and G1" respective y inclined at an angle of substantiall 515 to `the axis of the piston rodvP. Within the stuiiing box B and adjacent thelfaces G0 and G0, I rovide a series of fibrous packing rings frusto-conical in form with their exterior faces parellel to the inner surface of the stuiingbox Band their interior facesv parallel with the piston rod P. (Four rings are shown in Fig. 1.) Adjacent this series of packing rin s U is located a liller packing ring F f avinlg oppositely disposed frusto-conical faces 1 and F2, and adJacent this filler ringF is located a taper gland T having an inclined face T1 shaped to conform to the face F2 of the filler ring F. This gland T has an interior face T2 spaced from theA piston rod P so that it is not possible for any part of the gland T to contact the piston rod P; This4 gland T is provided with 'an annular shoulder 'I3 which bears against' the' Wall of the cylinder C and Aprovidesa recess T* within the end of the Gland T at the inner end of the stuffing box in which recess T" isv located the v 1brat' ing rin Q upon the piston rod P.

It'wi l be obvious that the vibrating rings V and Q serve to maintain the Jpacking bepacking glands when it is com-` tween the InFi s. 3, 4 and 5 are shown modified forms -b my improved gland, all of Jwhich are adapted to Aco-,act wlth the other parts of my device illustrated in Fig. 1.

In F ig, 3, is shown a gland G10 made iny a. single piece and provided 'with an interior circu ar recess G11 to receive the vibrating surrounds the piston rod P. This ring V10 is provided upon its exterior and interior fates with the circumferential channels'V11 and V12 respectively, and also with an interior channel V12. Radial bores V11 connect these channels V11, This gland G10 is interiorly threaded upon its outer end and screwed upon the exteriorly threaded inner end lof the retaining ring R10 which is adapted to be bolted upon the stuffing box in the usual Way. This ring R10 has 'an inner face R11 adapted to close Athe recess G11 of the gland G10 to form an' oil chamberltoy enclose lthe ring V1".` The ring R10 is provided with an oil conduit R12 communicating with the recess G10 and an interiorly threaded socket R12 `communicating with the conduit R12, to receive therein an oil cup or other source of lubricant. The ring R10. is further pro,- vided upon yits face R11 with'brace studs R1* Atapped into said ring and adapted to pass r V10 provided for this'l purpose.

through transverse openings V1i in the ring These studs The ring R10 are spaced from the piston rodv P 'i when the parts are in position so that no part of the gland or ring can contact the piston rod P. The gland G10 is rprovided with an inner beveled JKface-` G13 inclined in the same way as the inner faces G2 and G0 of the two-piece gland shown in Fig. 1, and for the same purpose.

In Fig. 4, is shown a form of two-piece gland similar -to that shown in. Fig. 1,-and adapted to be placed in position by means of a screw-cap instead. of a bolted-on retaining ring. In this form of gland there are two portions G21 and G22 having interior semi-circular recesses G22 and G22 respectively which together form a chamber to receive a vibrating ring VQsuch as is shown in Fig. 1. The portion G21 is provided with an o1l conduit G2S communicating with the recess G23. -Into `the outer end of the portion G21 there is'tapped an elbow-E `an interiorly threaded end R21 which may be screwed upon the exteriorljy threaded outer endaof the stuing box Bf, thus drawing the gland into proper position in the] stuiiing box B. The interiorsemi-ircular concave faces G22 and G27 of the portions G21 and G22 respectively-are spaced from the piston rod P when the gland 1s screwed into properl position, so that it is not possible for Jany part of the gland to contact the piston rod P. The inner ends of the portions G21 and G22 faces G22 and G20 respectively, in the same manner as the portions G1 and G2 shown in Fig.-1 and for the same' purpose;

In Fig. 5 is shown a form of two-piece gland intended to be used for packing a stuffing box in which heavy grease or dope may bev used as a lubricant instead of a fluid oil. In this form of gland there are two portions G11 xand G22 provided with the interior semi-circular recesses -G80 and G2* respectively which together form a chamber to receive therein the vibrating 'ring V20 which is similar in form to the vibrating ring Q in Fig.h1. The portions G21 and AG22 interiormgemi-circular recesses G and G2 The portions G21 are also provided with the are' provided with the beveled l name outer face of the portion Ghand provided with the grease screw-plug for forcing heavy grease or-dope into the lubricating chamber and the rin D therein. The portions G31 and G ave interior semi-circular concave faces Gra8 and G39 respectivelv which are spaced from the piston rd l when the gland is properly positioned, so

lthatno part of the gland can contact the piston rod Pf'l'he inner ends of the portions G and G32 are provided with beveled faces G14 and G respectively, in the same manner as the other glands already described.V Theform of gland shown in Fig. F may be applied to the stuiiing box by means of either-the bolted-up retaining ring,

l such as is shown in Fig. 1, or by a/screwcasuch. as is shown 1n Fig 4. aving described my invention, what l claim is;

1. In a piston rod stuing box packing, the combination of a compressiblepacking medium adapted to contact the iston rod;

a seat mounin the Mg bon; a

, vibrating ring mounted in saidv seat :ma:

a packing gland adapted to compress between itself and said seat ring the compressible packing medium and also to be rigidly attached to said stuiiing box, said seat ring and said gland being provided lwith inner surfaces spaced from the piston rod,'said surface of said gland being provided with a n ve; and a vibratin ring mounted upon said piston rod in sald groove.

2. In 'a s i1-tg box, the combination of a seat ring provldedwith an interior face; a groove in said face; a vibrating ring in said w a packing gland provided with an'interior face; a groove'in said face; a

" vibrating ring in said groove; and a compressible packing medium between said seat ring and said gland. f l

3 ln a stubox, the combination of a seat ring provided with an interior face; a groove 1n said face; a vibrating ring in said ve; a packing gland provlded with an interior tace and a lubricating conduit; a in said face communicating with said conduit; a vibrating ring in said groove provided with a lubricating conduit; and a compressible packing medium between said seat ring and ysaid gland.

ln testimony whereof 'li t?" t.

AM STUDEKlUM. 

